Javascript - load events for embed elements

If I do an online onload event for embed objects, that seems to work but I can't seem to get the load event working through addEventListener. Is this expected?

From stackoverflow

• Probably, but it may be browser dependent.

  windows and images and iframes define their load events with addEventListener and attachEvent, but other load events are browser specific.

  A script or link element's onload doesn't attach in IE, for instance.

• could always set like this:

  document.getElementById("objectId").onload = funtion(){ ... }
  

  strager : @Geuis already said that works. They are wondering why `addEventListener` doesn't work.